Century receivers have always been a crap shoot. When they work, they work as well as any other. When they have issues, you'll at least contemplate smashing the damn thing.
For a basic, no-frills FAL, get an IMBEL kit from Arizona Response Systems, and a Type III receiver from DSA (Coonan will not help you out at all if there is a problem with their receiver). Faltools.com has a receiver wrench, barrel vise, and alignment tools. Get .308 GO and NO-GO gauges from Brownells. Most people use pin gauges to determine the required locking shoulder thickness, but I prefer a set of Starrett Hole Gauges. Much more versatile than pin gauges.
Miscellaneous other tools:
3/4" drive bar for the receiver wrench
-1/2" and 9/16" for the receiver wrench bolts and barrel vise bolts respectively
-anti-seize grease for the barrel threads
-rosin for extra grip on the barrel vise
-bench vise to hold barrel and barrel vise assy.
-set of calipers
-buttstock tool: for safely installing or removing the recoil springs
-extractor tool: makes installing or removing the extractor a breeze
-a handful of punches and a hammer for driving in pins
-screwdrivers
So, for a few hundred bucks in tools (most of which can be used for other tasks; all of which can be used to service your FAL[s]) and some reading on the subject, you can wrench one together in your garage.
Gunthings.com has NOS Israeli mags, and there are always some floating around on the FAL Files Marketplace. DSA or the Marketplace is your go-to for small parts.